DPDK patches and discussions
 help / color / mirror / Atom feed
From: Bruce Richardson <bruce.richardson@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v2] ixgbe: fix check for split packets
Date: Wed, 22 Jul 2015 10:13:30 +0100	[thread overview]
Message-ID: <1437556410-14102-1-git-send-email-bruce.richardson@intel.com> (raw)
In-Reply-To: <1437492307-29754-1-git-send-email-bruce.richardson@intel.com>

The check for split packets to be reassembled in the vector ixgbe PMD
was incorrectly only checking the first 16 elements of the array instead
of all 32. This is fixed by changing the uint32_t values to be uint64_t
instead.

Fixes: cf4b4708a88a ("ixgbe: improve slow-path perf with vector scattered Rx")

Reported-by: Zoltan Kiss <zoltan.kiss@linaro.org>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

---
V2: Rename variable from split_fl32 to split_fl64 to match type change.
---
 drivers/net/ixgbe/ixgbe_rxtx_vec.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec.c b/drivers/net/ixgbe/ixgbe_rxtx_vec.c
index d3ac74a..f2052c6 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx_vec.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx_vec.c
@@ -549,10 +549,10 @@ ixgbe_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
 		return 0;
 
 	/* happy day case, full burst + no packets to be joined */
-	const uint32_t *split_fl32 = (uint32_t *)split_flags;
+	const uint64_t *split_fl64 = (uint64_t *)split_flags;
 	if (rxq->pkt_first_seg == NULL &&
-			split_fl32[0] == 0 && split_fl32[1] == 0 &&
-			split_fl32[2] == 0 && split_fl32[3] == 0)
+			split_fl64[0] == 0 && split_fl64[1] == 0 &&
+			split_fl64[2] == 0 && split_fl64[3] == 0)
 		return nb_bufs;
 
 	/* reassemble any packets that need reassembly*/
-- 
2.4.3

  parent reply	other threads:[~2015-07-22  9:13 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-21 15:25 [dpdk-dev] [PATCH] " Bruce Richardson
2015-07-22  0:44 ` Lu, Wenzhuo
2015-07-22  8:29   ` Bruce Richardson
2015-07-22  9:13 ` Bruce Richardson [this message]
2015-07-22  9:47   ` [dpdk-dev] [PATCH v2] " Zoltan Kiss
2015-07-22  9:59     ` Bruce Richardson
2015-07-22 13:19       ` Zoltan Kiss
2015-07-22 13:22         ` Zoltan Kiss
2015-07-22 13:35         ` Richardson, Bruce
2015-07-22 13:47           ` Thomas Monjalon
2015-07-26 12:41   ` Thomas Monjalon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1437556410-14102-1-git-send-email-bruce.richardson@intel.com \
    --to=bruce.richardson@intel.com \
    --cc=dev@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).